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Chapter 22 – CDMA Terminology and Acronyms
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C) 129
IS-95 IS-95 is the first CDMA standard published by Qualcomm in 1993. It is a TIA standard for
North American cellular systems based on CDMA. It is widely deployed in North America
and Asia.
IS-95A IS-95A is a CDMA standard with improved voice quality. IS-95A defines what generally is
known as cdmaOne, which supports voice and 14.4 Kbps data rates. This standard is
widely used throughout the world.
IS-95B IS-95B is a CDMA standard contains Medium Data Rate capabilities and bug fixes for
system access failures. It is considered a 2.5G system. It supports data rates up to 115
Kbps.
IS-2000 IS-2000 is the first 3G CDMA standard based on IS-95B. It contains a significant increase
in voice capacity and high-speed data rates. It is backward compatible with IS-95B and
IS-95A.
IS-707 TIA/EIA/IS-707 describes data services available on wideband spread spectrum
systems. It is organized into a series of related recommendations, some of which address
functions common to all CDMA data services and others that describe a specific data
service.
IWF Interworking Function. A process that acts as a gateway or interface between two or
more communication components. For example, an IWF is used to interface wireless
CDMA networks and wire line PSTN or packet-data networks.
LAPM Link Access Procedure for Modems. An error control protocol defined in the ITU-T
recommendations V.42. Like the MNP protocols, LAPM uses cyclic redundancy checking
(CRC) and retransmission of corrupted data (ARQ) to ensure data reliability.
MCC Mobile Country Code is a pre-defined 30-digital number that represents a country in the
IMSI.
MDN MDN stands for Mobile Data Number or the mobile phone number.
MIN MIN stands for Mobile Identification Number or mobile user account number.
MNC MNC stands for Mobile Network Code, a pre-defined 2-digital number that represents a
sub-network in the IMSI (usually set to “00”).
MO MO stands for Mobile Originated, an action (usually a call) that is first started from the
phone. An outgoing call or SMS.
MS MS stands for Mobile Station. The term MS is commonly used to represent the phone or
mobile.
MT MT stands for Mobile Terminated. MT is an action, usually a call that is first started from a
land based network. An incoming call or SMS.
MSM MSM stands for Mobile Station Modem.
NAM NAM stand
s for Number Assignment Modem. The NAM is collection of internal
parameters that define a working phone for a given network (phone number, access
parameters, etc.).
NID NID stands for Network ID. The NID is an identification number that represents
geographic location of a common coverage area; but is a subset of the SID, usually a
neighborhood in a large city. NID is usually not used and is set to zero. Also see SID.
NV-RAM NV-RAM stands for Non-Volatile Random Access Memory. NV-RAM is a data storage
device that does not lose its data when power is turned off.
OTAPA OTAPA stands for Over The Air Parameter Administration. It is an automatic update in
internal software parameters (PRL for example) by means of a specially defined CDMA
data call that is mobile terminated (MT).
OTASP OTASP stands for Over The Air Service Programming. It is an automatic update in
internal software parameters PRL; for example, PRL by means of a specially defined
CDMA data call that is mobile terminated (MT).
PD Position Determination. Process by which the mobile GPS position is obtained.
PDU PDU stands for Protocol Data Unit. It is a GSM SMS standard whereby any type of binary
data can be transported via an SMS message. In the CDMA system, the PDU mode will
not be supported; instead, the Unicode format message is supported.
- CDMA-C1 AT Commands 1
- Contents 3
- Chapter 1 – Introduction 7
- Chapter 2 – AT Commands 8
- Overview 8
- Command Types 9
- Command Format and Syntax 9
- Input Command Syntax 10
- Other Syntax 10
- Output Response Syntax 10
- Parameter Defaults 10
- Unsolicited Message Syntax 11
- Attention AT 12
- Repeat Last Command A/ 12
- Echo E 12
- Bits +WUSLMSK 13
- Chapter 4 – Identification 15
- Commands 15
- Chapter 5 – Query Commands 17
- Chapter 6 – Global 18
- Configuration Commands 18
- Save Configuration &W 19
- Chapter 7 – Status Commands 20
- Chapter 8 – Communication 26
- Set Diagnostic Port +WDMX 27
- Set DCD Signal &C 27
- Set DTR Signal &D 28
- Set DSR Signal &S 28
- Automatic Answer S0 30
- Command Edit Character S5 31
- Chapter 9 – Call Control 33
- Hang-Up Command H 34
- Answer a Call A 34
- Incoming Call +RING 35
- Emergency Mode +WSOS 37
- Call Answered +WANS 38
- Call Connected +WCNT 38
- Call Ended +WEND 39
- Call Originated +WORG 40
- CPHS Command +CPHS 40
- Call Forwarding +CCFC 42
- Send DTMF Tones +VTS 44
- Chapter 10 – Network Service 45
- Signal Quality +CSQ 46
- Band Preference +WBND 49
- Service Indication +WSRV 50
- Roam Preference +WRMP 50
- Default Cell Band +WDCB 51
- Roaming Indication +WROM 51
- Chapter 11 – Provisioning 54
- Control Commands 54
- Excess SPC Failures +WLCK 55
- Download PRL +DPRL 56
- Commit Changes +WCMT 58
- Set IMSI +WIMI 58
- Slot Cycle Index +WSCI 60
- SID and NID +WSID 60
- Chapter 12 – OTASP / OTAPA 61
- Commit Successful +WOTC 62
- SPL Unlocked +WOTS 62
- NAM Download OK +WOTN 62
- MDM Download OK +WOTM 62
- IMSI Download OK +WOTI 63
- PRL Download OK +WOTP 63
- Chapter 14 – Short Message 70
- Service Control Commands 70
- Read Message +CMGR 71
- List Message +CMGL 72
- Delete Message +CMGD 73
- Chapter 15 – Audio Commands 79
- Microphone Gain +VGT 81
- Speaker Gain Control +VGR 82
- Digital Gain Receive +WDGR 84
- Echo Cancellation +ECHO 86
- Speaker Driver Gain +WSDG 87
- Audio Loopback &T 88
- Chapter 16 – Data Commands 89
- R-SCH Selection $QCMIP 90
- MIP Selection $QCMIPP 91
- Chapter 17 – TCP APP AT 98
- Chapter 18 – Sleep Commands 107
- Builds) 111
- Chapter 19 – Antenna 111
- Commands (Not for IP and GPS 111
- +WANTPOLL 113
- Auxiliary GPS Power +WANT 115
- Scenarios 118
- Call Processing 119
- Sending Binary Data 120
- TCP Socket Examples 121
- TCP Server Example 122
- ATZ, and AT&F 123
- Chapter 22 – CDMA 128
- Terminology and Acronyms 128
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